100025421 has 8 divisors (see below), whose sum is σ = 135553824. Its totient is φ = 65590320.

The previous prime is 100025411. The next prime is 100025423. The reversal of 100025421 is 124520001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100025421 - 2⁷ = 100025293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100025421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100025423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273111 + ... + 273476.

It is an arithmetic number, because the mean of its divisors is an integer number (16944228).

Almost surely, 2^100025421 is an apocalyptic number.

It is an amenable number.

100025421 is a deficient number, since it is larger than the sum of its proper divisors (35528403).

100025421 is an equidigital number, since it uses as much as digits as its factorization.

100025421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546651.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 100025421 is about 10001.2709692319. The cubic root of 100025421 is about 464.1982113055.

Adding to 100025421 its reverse (124520001), we get a palindrome (224545422).

The spelling of 100025421 in words is "one hundred million, twenty-five thousand, four hundred twenty-one".